'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')
const CompressionPlugin = require('compression-webpack-plugin')

function resolve(dir) {
    return path.join(__dirname, dir)
}

const name = defaultSettings.title || '考试平台' // page title
const port = process.env.port || process.env.npm_config_port || 9528 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
    publicPath: './',
    outputDir: 'exam-manage-static',
    assetsDir: 'static',
    lintOnSave: false,
    productionSourceMap: false,
    configureWebpack: (config) => {
        if (process.env.NODE_ENV !== 'development') {
            config.optimization.minimizer[0].options.terserOptions.compress.drop_console = true // 去除console.log
            return {
                plugins: [
                    new CompressionPlugin({
                        // 开启GIP打包
                        filename: '[path].gz[query]',
                        test: /\.js$|\.html$|\.css/,
                        algorithm: 'gzip',
                        threshold: 10240,
                        deleteOriginalAssets: false,
                        minRatio: 0.8
                    }),
                    new UglifyJsPlugin({
                        uglifyOptions: {
                            compress: {
                                arnings: false,
                                drop_debugger: true, // console
                                drop_console: true,
                                pure_funcs: ['console.log'] // 移除console
                            }
                        }
                    })
                ]
            }
        }
    },
    devServer: {
        port: port,
        open: false,
        overlay: {
            warnings: false,
            errors: true
        },
        proxy: {
            [process.env.VUE_APP_BASE_API]: {
                target: `http://112.74.169.74:10111/`,
                // target: `http://101.34.9.92/api/`,
                ws: false,
                changeOrigin: true,
                pathRewrite: {
                    ['^' + process.env.VUE_APP_BASE_API]: '/api/smart-service'
                }
            },
            '/imageUrl': {
                target: `http://36.133.182.165:1088/api/file/`,
                ws: false,
                changeOrigin: true
            }
        }
    },
    configureWebpack: {
        name: name,
        resolve: {
            alias: {
                '@': resolve('src')
            }
        }
    },
    chainWebpack(config) {
        config.plugins.delete('preload') // TODO: need test
        config.plugins.delete('prefetch') // TODO: need test
        config.module.rule('svg').exclude.add(resolve('src/icons')).end()
        config.module
            .rule('icons')
            .test(/\.svg$/)
            .include.add(resolve('src/icons'))
            .end()
            .use('svg-sprite-loader')
            .loader('svg-sprite-loader')
            .options({
                symbolId: 'icon-[name]'
            })
            .end()

        // set preserveWhitespace
        config.module
            .rule('vue')
            .use('vue-loader')
            .loader('vue-loader')
            .tap((options) => {
                options.compilerOptions.preserveWhitespace = true
                return options
            })
            .end()

        config.when(process.env.NODE_ENV === 'development', (config) =>
            config.devtool('cheap-source-map')
        )

        config.when(process.env.NODE_ENV !== 'development', (config) => {
            config
                .plugin('ScriptExtHtmlWebpackPlugin')
                .after('html')
                .use('script-ext-html-webpack-plugin', [{
                    inline: /runtime\..*\.js$/
                }])
                .end()
            config.optimization.splitChunks({
                chunks: 'all',
                cacheGroups: {
                    libs: {
                        name: 'chunk-libs',
                        test: /[\\/]node_modules[\\/]/,
                        priority: 10,
                        chunks: 'initial' // only package third parties that are initially dependent
                    },
                    elementUI: {
                        name: 'chunk-elementUI', // split elementUI into a single package
                        priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                        test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                    },
                    commons: {
                        name: 'chunk-commons',
                        test: resolve('src/components'), // can customize your rules
                        minChunks: 3, //  minimum common number
                        priority: 5,
                        reuseExistingChunk: true
                    }
                }
            })
            config.optimization.runtimeChunk('single')
        })
    }
}